Improvement in padlocks



. and stop.

UNITED STATES PATENT OEETCE.

LOUIS HILLEBRAND, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF HIS RIGHT TO DANIEL WOLF, OF SAME PLACE.

IMPROVEMENT IN PADLOCKS.

Specification forming part of Letters Patent No. 206,327, dated July 23, 1878 application liled June 25, 1878. l

To all whom it may concern:

Be it known that I, LoUIs HILLEBRAND, of the city and county of Philadelphia, and State of Pennsylvania, have invented a new and useful Improvement in Padlocks, which improvement is fully set forth in the following specication and accompanying drawings, in which- Figure l is a side elevation of the padlock embodying my invention. Fig. 2 is a central vertical section thereof. Fi 3 is a side view of the shackle detached. Fig. et is a face view ofthe lock-cover. Figs. 5 and 6 are views of the interior of the lock, showing an independent bolt. Fig. 7 is a view ot' the independent bolt. Fig. S is aface view of a partition guide Fig. 9 is a face view of a center ward. Fig. 10 is a face view of a partitionplate. Fig. 11 is a face view of the ordinary locking-bolt. Figs. 12 and 13 are views orn the two keys employed.

Similar letters of reference indicate corresponding parts in the several f1 gures.

Padlocks with revolving tumblers engaging with the legs of the shackle thereof are conimonly called Scandinavian,77 in some of which the shackle can be entirely removed, and in others it can be sufficiently drawn out to open the lock,while one leg of the shackle rcmains secured to the lock-case, to accomplish which various means have been adopted.

My invention consists of a padlock whose shackle, when open, is prevented from dropping from the lock-case by means of a bolt which is independent of the locking bolt or key, andadapted to be operated by an extra key, for permitting the entire withdrawal of the shackle.

Referring to the drawings, A represents the lock-ease, and B the sliding and rotary shackle, whose legs a a are adapted to be engaged by the bolts I), between which are placed partition-plates, wards, and stops, as usual. The bolts will be of suitable construction, and operated by a proper key, a form of which is shown in Fig. 13. Tithin the case, at what may be termed the upper part thereof, there is iitted a revolving bolt, C, which is adapted to engage with the lowermost notch or shoulder, d, ot' the long leg a of the shackle, and said bolt is operative independently ot the other boltsby an extra key, a form of which is shown in Fig. 12, the two keys being different.

The several bolts b are constructed with central openings, through which the key, Fig. 13, is introduced, and the key, Fig. 12, in order to reach the bolt B, is passed through said openings, as well as the openings of the wards, guides, &c.

The bolt O is so shaped that when rotated in one direction (see Fig. 5) it will engage with the lowermost notch or shoulder of the leg a, wh en the shackle is withdrawn to the eX- tent necessary for the leg a to clear the top of the lock-case, the lock then being open, as in Fig. 2. In this position of parts the shackle may be rotated on the leg a, for disengagement from the staple, hasp, or other place ofattachment, and subsequent application thereto.

rated from the lock-case, and when the lock is y put together the legs of the shackle are inserted in the lock-case, and the bolt O properly rotated, thus disposing the latter to engage with the shoulder or notch cl.

Vhen the shackle is in position, Fig. 2, the bolt O immediately engages with the shoulder d,- but when the shackle is fully introduced into the lock-case, as in Fig. 1, the bolt is in such position that when the shackle is subsequently withdrawn, as in Fig. 2, the bolt projects beyond the path of the shoulder or notch d, and thus forms a stop for the further withdrawal or" the shackle, without, however, preventing the rotation of the latter on its leg a..

Vhen the lock requires repair the shackle may be readily removed in the manner stated, and it is desirable that the extra key remain in the custody ot' the lock-maker for convenience and safety.

1) represents the lock-cover at the bottom of the ease A. The key-hole e in said cover is somewhat of the forni of a cross, with rounded corners at opposite angles, as at e'.

I employ a ilat key, say of the form Fig. 13, and, introducing it into the key-hole c, it is rotated in proper directions for locking` and unlocking the bolts b.

It will be noticed that portions of the face ofthe key ride on the rounded corners e of the key-hole, thus supporting` and guiding the key, and dispensing with a revolving guide in the loelrcase.

The opening in the center Ward, Fig. 9, may be constructed similarly to that of the keyhole of the leek-cover D.

The key may be notched or bitted correspondingly on both sides, so as to be inserted and operative either Way in the key-hole.

independent bolt engaging with the shackle When the lock is open, and adapted to be operated by an extra key vfor entire disengagement from the shackle, whereby the latter may be removed, substantially as and for the purpose set forth.

LOUIS vIl lLLE BRA-Nl).

Titnessesz JOHN A. Wlnnnnsunm, A. l. GRANT. 

